Just to be clear - we do not guarentee that any of the development code in Launchpad, between release tags, will install or work correctly... it is development code after all :-)

Just before we do a release we do a full test to ensure that everything is working correctly and will install.

Please can you use the release code for your installation?

If you intended to develop some new features for the community then that is excellent, most appreciated... however, even in this case you still need to start from the last tagged release - otherwise we will never be able to merge your code in properly... sorry if this wasnt clear before.